TM 10-3950-672-24-2
Part or Assembly
Ref. Point
mm
in
Piston Pin
Piston pin diameter
39.990
MIN
[1.5744]
40.003
MAX
[1.5749]
Connecting Rod
Pin bore diameter (with bushing
40.053
MIN
[1.5769]
installed).
40.092
MAX
[1.5784]
Rod Bearing Clearance - Checking
Measure the crankshaft bore with the bearings installed and the capscrews tightened to 99 N
m
[73 ft4b].
Record the smallest diameter.
Measure and record the mean diameter of
68.962
MIN
[2.7150]
rod journal on the crankshaft.
69.013
MAX
[2.7170]
Out-of-Roundness: 0.050mm [0.002 in]
Taper: 0.013mm [.0005 in]
Bearing clearance - Rod Inside Diam-
eter Minus Crankshaft Journal Diame-
ter.
Clearance: 0.114mm [0.0045 in]
Bearing clearance can also be determined with plastigage during engine assembly.
Piston and Connecting Rod - Assembly
Caution: Be sure "front" marking on piston and the numbers on the rod and cap are oriented
as illustrated.
Piston Ring Gap - Checking
Caution: The top ring for a turbocharged engine is not the same as the top ring for a naturally
aspirated engine.
5-357